Mark J. Bolus - 17 Mar 2026 Form 4 Insider Report for COMMUNITY FINANCIAL SYSTEM, INC. (CBU)

Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
19 Mar 2026, 11:13:17 UTC
Prior SEC filing
16 Apr 2025
Next SEC filing
29 Jun 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Mark J. Bolus

Key filing fact

Mark J. Bolus filed Form 4 for COMMUNITY FINANCIAL SYSTEM, INC. (CBU) on 19 Mar 2026.

Key facts

  • This page summarizes Mark J. Bolus's Form 4 filing for COMMUNITY FINANCIAL SYSTEM, INC. (CBU).
  • 1 reported transaction and 1 derivative row are listed below.
  • Accepted by SEC: 19 Mar 2026, 11:13.

Change

  • Previous filing in this sequence was filed on 16 Apr 2025.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001486056 Primary reporting owner

Bolus Mark J.

Relationship
Director
Address
C/O COMMUNITY FINANCIAL SYSTEM, INC., 5790 WIDEWATERS PARKWAY, DEWITT
Signature
/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Mark J. Bolus
Signature date
19 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
106,251
Date
17 Mar 2026
Ownership
Direct
Footnotes
F1
CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
8,131
Date
17 Mar 2026
Ownership
By Mark Bolus Trust
Footnotes
F2
CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,939
Date
17 Mar 2026
Ownership
By Taylor Bolus Trust
Footnotes
F3
CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,939
Date
17 Mar 2026
Ownership
By Paige Bolus Trust
Footnotes
F3
CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,939
Date
17 Mar 2026
Ownership
By Noah Bolus Trust
Footnotes
F3
CBU holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,939
Date
17 Mar 2026
Ownership
By Austin Bolus Trust
Footnotes
F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CBU transaction Derivative

Phantom Stock (Deferred Stock Units)

Award

Transaction value
Shares
+1,220
Change %
+48%
Price
$0.000000*
Shares after
3,758
Date
17 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
1,220
Exercise price
Footnotes
F4, F5
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Includes 2,423.134 shares acquired pursuant to the Community Financial System, Inc. Dividend Reinvestment Plan.

Footnote F2

Includes 275.879 shares acquired pursuant to the Community Financial System, Inc. Dividend Reinvestment Plan.

Footnote F3

Includes 188.405 shares acquired pursuant to the Community Financial System, Inc. Dividend Reinvestment Plan.

Footnote F4

The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the "LTIP"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date.

Footnote F5

Includes 19.1578, 21.1856, and 19.4356 units of phantom stock acquired on July 10, 2025, October 10, 2025, and January 12, 2026 under the LTIP's dividend reinvestment feature.

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